Flush-tank.



c. NUESSL E.

FLUSH TANK.

APPLICATION FILED MAR. 26. 1917- Patented Nov. 20, 1917.

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CARL NUESSLE, 01? EAST norms, rntinors.

sL sH-TANK.

Specification of Letters Patent. Patented N 20, 191 '7,

Application filed March 26, 1917. Serial N 0. 157,396.

To all whom it may concern: I

Be it known that I, CARL NUESSLE, a citizen of the United States of America, residing at East Moline, in the county of Rock Island and State of Illinois, have invented certain new and useful Improvements in Flush-Tanks, of which the following is a specification.

My present invention relates to improvements in flush valves especially adapted for use in the tank of a low down closet, and is specially devised for the purpose of providing a quick opening and slow closing valve of this type which is simple both in operation and construction, durable, and comparatively inexpensive in production.

The valve is of the vacuum type and the vacuum is created when the valve is opened so that the water will flow quickly and freely, but upon releasing the valve it closes, or moves toward closed position slowly, as the vacuum is overcome, as will be hereinafter more specifically set forth.

In the accompanying drawings I have illustrated one complete example of the physical embodiment of my invention constructed according to the best mode I have so far devised for the practical application of the principles of my invention.

Figure 1 is a vertical central sectional view of the valve involving my invention, parts being shown in elevation.

Fig. 2 is a transverse sectional view on line 22.

Fig. 3 is a view on line 3-3.

Fig. 4 is a view showing a conventionalized low down tank equipped with the device of my invention.

In order to illustrate my invention I have employed a conventional water closet tank indicated at A, which is usually of metal, and equipped with the removable lid or cover B in order that access may readily be had to the flushing apparatus inside the tank.

The outlet pipe of the flushing device is indicated by the numeral 1 and is fixed in the bottom of the tank A and projects upwardly therefrom to form a dome with a closed top 2, while the walls of the pipe are pierced with apertures or openings 3 arranged adjacent the bottom of the tank for emptying the contents of the tank through the outlet pipe 1. By means of the nut 4: the outlet pipe is clamped to :the'tank bot tom, gasket i and '6 emp oyed junction with the nut, tank bottom, and a shoulder 7 of the pipe, for making a water tight joint as usual, and the coupling indicated at 8 may be connected to the bowl in usual manner.

Just below the apertures 3 in the pipe, an annular shoulder 9 is formed, extending around the outside of the pipe, and forming a seat for a rubber gasket 10 in the form of an open ring to fit around the pipe and rest on the shoulder.

The gasket 10 and its seat 9 form a support for the closed tubular member 11 which is of metal, cylindrical in cross section to fit over the dome 2 with a neat, but not tight fit, and having a closed top 12. By'means of the coupling 13, lift rod 1 1, and lever 15 (partly inside and partly outside the tank) the member 11 may be lifted from the outlet pipe to uncover the apertures or outlet ports 3 in the outlet pipe. In connection with the outlet pipe, an overflow pipe 16 is used in the tank to carry off excess water through the outlet pipe.

The modus opemmlz' is as follows. Assuming the tank A to be filled with water and the tubular cap or cover 11 in position indicated in Fig. 1, when it is desired to discharge the water from the tank, the lever 15 is turned as usual andthe tubular cap 11 is lifted from its seat or gasket 10, up to approximately the position shown in dotted lines Fig. 1. This movement of course uncovers the ports 3 and the water from tank flows through the ports and out through the outlet pipe 1. As the tubular cap is lifted it will be seen that a vacuum will be created in the space between the top 2 of the dome of the outlet pipe, and the top of the cap (12) and this vacuum is preserved by the flow of water under the edge of the cap as it is lifted against the pressure or weight of water in the tank. As the cap is lifted to dotted position, the air and water begin to slowly pass up between the walls of the cap and pipe 1 and the vacuum is gradually broken. As the water falls in the tank the water in the dome passes slowly out around the edge of the. cap with the result that by the time the tank has been emptied, the valve cap has descended and closed the ports, the gasket 10 forming a Water tight joint as usual, and the valve cap being held closed by the water filling the tank.

What I claim is In a flushing device, the combination with a tank, and its outlet pipe extending into the tank and having a closed top, and apertures in the pipe near the bottom of the tank, of a tubular cap fitting over said pipe to close the apertures, and means for lifting the cap, whereby the apertures are uncovered and. a vacuum is formed. in the cap above the pipe and suction therefrom causes air and Water to rise between the pipe and cap to insure a slow return of the cap to 110 closed position.

In testimony whereof I afiix my signature.

CARL NUESSLE.

(Homes of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G. 

